Sadio Mane is adamant Naby Keita will prove his quality at Liverpool.

Despite a disappointing string of setbacks , Mane believes his close friend will develop into a top-class operator for the Reds when he eventually overcomes his injury problems.

"Since our days at Salzburg, he was always a good man, and a good friend to me," Mane told Complex.

"He's such a great player, so I think everyone will see once he gets over his injures how important he will be for this club.

"I have no doubts about him!"